Home / 1,259,420.80-1,889,131.20-512,003.20

Finding the Fourth Proportional to 1,259,420.80, 1,889,131.20 and 512,003.20

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Solution

The fourth proportional to 1,259,420.80, 1,889,131.20 and 512,003.20 is: 768,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,420.80 : 1,889,131.20 = 512,003.20 : x
  2. Step 2: Convert to fraction form
    1,259,420.80/1,889,131.20 = 512,003.20/x
  3. Step 3: Cross multiply
    1,259,420.80x = 1,889,131.20 × 512,003.20
  4. Step 4: Simplify right side
    1,259,420.80x = 967,241,219,619.84
  5. Step 5: Solve for x
    x = 967,241,219,619.84/1,259,420.80
  6. Step 6: Final answer
    x = 768,004.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.